Improved sawing-mill



UNITED STATES PATENT Orsi-cs...

WILLIAM'HA'WKINS AND WILLlAFM C. CLARY. OF MlLWAUKEEQlVlSC-.N-Silbl lMPROV'ED SAWlNG-MILL.

Spociiicaliou forming part of Letters PatontNo. 19,774, dated March 30, i858; Reissue No. 55;', dated- May '11, 1858..

To all whom t mal/ canberra Bc it known that we, WILLIAM HAWKINS and WILLIAM G. CLARY, of Milwaukee, in the county of Milwaukee and State of Wis! consin,have invented new and uscfullmprove ments in Machines for Sawing Lumber; and

we do declare that the following is afull, clear, and exact description of the construction and operation ot the saine, reference being had to the annexeddrawings, and to the letters of refe ence marked thereon, making a part ofthis speciicalion, in which- Figure l is a perspective view. Fig. 2 is a top view. Fig. 3 is aside view; Figs. 4C 4,

views ofthe doubleacting lever; Figs. 5 and y, by connections of the intermediate belts and' shafts, V I W O, moving the log-carriage B bot-h ways. The cross-belt a; being on the tight pulley the log-carriage B moves in direction (see arrow, Fig. 2) until the log passes the saw, when thearxn R comes in contact with the setblock T and turns up the segment of a gear, J, which by its connections rotates the screws G G and sets the logr to the saw. The pin .p in the carriage B now moves the slide K, which turns the doubleacting lever D, which, by its connections, sets thesaw S oblique to the parallel line ofthe carriage the other way, and the wedge-roller 1?' is thrown out of the way, and wedge-roller P" is' thrown up. The belt-shipper l being connected to the lever D, the cross-belt a; is thrown on the loose-pulley, and open belt y on the tight pulley moves the carriage B in the. opposite direction and goes through the same operation before described. The saw-shaft E, Fig. 2, is hung in frame F being held down by bolts a a a a in slots in `frame F under bolt-heads, and swings on a pivot under bearing, f, at the outside end of frame F. The frame F, being connected, by levers d d d, to double-actin g lever D, is moved so as to set the saw oblique and alternately to the parallel line of the carriage, so that the saw opposite the cutting-edge is clear of the log when cutting'in either direction. Instead of' changing the direction of the saw, the lin( of thc carriage may be changed by equivalenti4 means to those here set forth for changing th( saw. lli'c advantage of these improvement:

is, that a saw niay be used that is thick in in ceuterand thin on its cutting-edge, audnol require set to the extent of its' center thick ness, therebyusingr a stiffer saw, cutting less sawLkerf, and' using less power.

P, Fig. 2, is a lever which vibrates at its center h.. On each end of this lever there are wedge-rollers P' P", Figs. 2 and 3; or wedges may be attached to ends of lever P in place ofV wedge-rollers, to keep the board clearo saw S, and are changed alternately by arm L, which arm L is moved by pins G C; or it maybe connected and worked by double-acting lever D.

W W,.Fig. 2, are stationary guides -made fast to main frameA.

-W W', Fig. 2, are swing-guides attached. to frame A, said swing-guides being held to the saw by pins e e in saw-frame F and operating in connection with the stationary guides to guide the saw.

The screws Gr G are right and left handed, which are connected to head-block C, which holds the log by dogs S S ou the screws GG.

i i are geared Apinions.

b b are' ratchetplates.

g g are ratchet-wheels.

G' GiJ are bevel-gears.

The pinions i'i and ratchetrplates b b being loose,the ratchet-wheels g g and bevel` gears GJ Glj are made fast. The ratchet-plates b, Figs. 5 and 6, operate on ratchetwheel g by ratchets r r 1', and4 'pinion i, Fig. 5, operates plate b by o o, which fit the holes made in plate b when arm R, Fig.3, comes in contact with set-block T, and turns the segment of a gear, J, which works in pinion i and rotates screws G G, which are connected by shaft N.- The -pinion i, plateb, being loose lets the segment of a gear, J,drop back to its place, when the arm R leaves 'the setbloclr T ready to set again. The segment ot' a gear is changed by, slide t", Ato determine the.

degreeor extent of set intended to be given; or arm R may be made to shift. -The armo c, Fig. 2, on rods K K is connected to pinions l. Changing ii. On'the other. end of rodsk are arms Z- Z, so-lhatwhen thelog is sawed up the nuts'or screws G G come 4in contact with arms Z Z, and, moving the rods K K and the arms v v, disconnect the pinions i 'i from plates b b and stops setting. `The double-acting lever D,

Figs. 4 4, is made fast to the top of shaft m,

which works in hearings attached to frame A. The lower'end of shaft m is made fast-to plate t with notch n, to receive the latch g, connected to the angle lever u. The ang-lelever u'swings on sha-ft m, and is connected with link l. The latch q, bein-g raised ont-of notch n-and moved around, shifts the belts a:

and y and stops the motion'ot`..the carriage B' without changing the position of do ublc-actng lever D. l

. Having th us' described the construction and operation of our invention, what we chtim as new, 1and`desire tosecure by Letters Patent, ,S

tion to an oblique position in a. contrary direc tion to theliue of the log-carriage while cutting in either direetionby the movements of the saw efter ech cut altcrnatelyvfrom-an oblique position in" one direethernachine, and for the 'purposes' herein set forth.

2. The swingguides W W','in combination with the stationary guides W W, for the purpose of guiding the saw, as described.

3. The two wedge-rollers or wedges P".'tnd. I", to keep the board clear of the saw while cutting in either direction, as described.

4. The combination of piuions t' and their pins o, entering into recesses of plates b, the

ratchet-wheels g, the ratchets r, the adjusta,=

-pose of operating the belt-shifter l' without.' turning the lever 1), substantially ns set forth;

Milwaukee, April-14,1858. x i .l WILLIAM HAWKINS.. WILLIAM (J.(}LAR\Ly Witnesses: y

t ALBERT SMITH,

FRANK A. SM1'1H. 

